Volcano Definition and 63 Threads

A volcano launches a lava bomb straight upward with an initial speed of 28 m/s. a)Taking upward to be the positive direction, find the speed of the lava bomb 2.0 seconds after it is launched. b)Taking upward to be the positive direction, find the direction of motion of the lava bomb 2.0...

This isn't purely an Earth science question, but I don't know where else to post it. Recently, the Kasatochi volcano erupted in Alaska. It brought to mind something that happened to me a long time ago that I have always wondered about. In 1989 I was flying from Alaska to Seattle. Days...

Apparantly, an incredibly intense electrical storm develloped during the eruption, giving some spectacular light effects during the night http://www.nuestroclima.com/blog/?p=1003

So there is that wide spread layer of Volcanic ash, known as the Laacher Sea Tephra which is widely used as a dating marker but how old is it, itself? All with 95% confidence interval: K-Ar dating gives: 12,900 +/- 560 years before present A carbon date of the last tree ring of an ash...

Time to wing in a female virgin, or at least a PF sister that hasn't gotten lucky for a while. :rolleyes: Astronuc is a volcano-hound, so he'll probably volunteer to oversee the ceremony. Mexico City should have pleasant weather this time of year... Edit: Removed URL to image - rotating...

http://www.indiadaily.com/editorial/17965.asp A supervolcano hidden in a veritable mega-volcano nursery called the Eduardo Avaroa Caldera Complex, located in the inhospitable Puna-Altiplano region near the tri-section of Argentina, Bolivia, and Chile is a major focus of many volcano experts...

Ok, I've been working on this for awhile and I can't seem to understand how to work it out. ANY insight would be greatly appreciated! The problem: An erupting volcano (2.5 km tall) projects a boulder from a vent at an angle of 40 degrees to the horizontal direction. The rock lands 6.0 km away...

is it true that there are more greenhouse gasses released from a single Volcanic eruption than all of the gasses produced by man since the industrial revolution? If so, shouldn't that silence the global-warming advocates?

During volcanic eruptions, chunks of solid rock can be blasted out of the volcano; these projectiles are called volcanic bombs. At what initial speed would a bomb have to be ejected, at angle 35* to the horizontal, from the vent at A in order to fall at the foot of the volcano at B, at vertical...

:eek: http://www.nytimes.com/aponline/world/AP-Indonesia-Volcano.html?hp&ex=1147579200&en=0f32b76fdd6bcdc1&ei=5094&partner=homepage"...

A volcano fills the volume between the graphs z=0 and \frac{1}{(x^2+y^2)^3}, and outside the cylinder x^2+y^2=1 so I found the z height to be from 0 to 1, the radius from 1 to infinity, and theta to be from 0 to 2pi \int_0 ^{2 \pi} \int_1 ^{\inf}\int _0 ^ {1} r dzdrd \theta I know that...

Does anyone have any idea about when it might erupt again? I'd like to be prepared since the magma chamber of this thing will prolly wipe out the entire earth.

Iwo Jima and Japan lie along the western edge of the Pacific Ring of Fire (ROF). During the last 18 months, the seismic and volcanic activity seems to have increased, and along with the Sumatran tsunamis and a few big quakes off North and South America, one has to wonder its all related. See...